312004431 has 12 divisors (see below), whose sum is σ = 461154408. Its totient is φ = 203165424.

The previous prime is 312004391. The next prime is 312004487. The reversal of 312004431 is 134400213.

312004431 is a `hidden beast` number, since 31 + 200 + 4 + 431 = 666.

It is not a de Polignac number, because 312004431 - 2¹⁰ = 312003407 is a prime.

It is a super-2 number, since 2×312004431² = 194693529927267522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312004031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 402720 + ... + 403493.

It is an arithmetic number, because the mean of its divisors is an integer number (38429534).

Almost surely, 2^312004431 is an apocalyptic number.

312004431 is a deficient number, since it is larger than the sum of its proper divisors (149149977).

312004431 is a wasteful number, since it uses less digits than its factorization.

312004431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806262 (or 806259 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 312004431 is about 17663.6471601988. The cubic root of 312004431 is about 678.2454993692.

Adding to 312004431 its reverse (134400213), we get a palindrome (446404644).

The spelling of 312004431 in words is "three hundred twelve million, four thousand, four hundred thirty-one".